"Greg Mayman" wrote to "Mike Ross" (15 Jan 03  20:47:00)
 --- on the topic of "HVDC TRANSMISSION LINES"

 -=> Mike Ross said to Jay Emrie
 -=> about "HVDC TRANSMISSION LINES" on 01-13-03  09:02.....

 MR> I think GM has it reversed, LCD's don't work well in the cold. They

 GM> True, but they die after too many spells of high temperature.

 GM> Hmmm... if they slow down in the cold, do they speed up and wear
 GM> themselves out in the heat? Just a thought...

Yes, in the cold LCD displays look like slowmo replays on the sports
channel when the temps get below freezing. You can see each segment turn
on one at a time.

I'm thinking that maybe in the heat of a car dashboard it could be the
driver circuitry that may be stalling as the transistor leakage currents
rise. We know LCD's go black if the backplane isn't fed with an AC bias.

This happens accidentally for example if one forgets to turn off a DMM
and the battery dies overnight, in the morning the LCD will be stained.
Some of the stain goes away but some of it remains.

 Mike
 ****

... That was a fascinating period of time for electronics
--- Blue Wave/DOS v2.30